LEED v4 – 4th public comment Building Design and Construction – Summary of Changes

SUSTAINABLE SITES

Prerequisite Construction Activity Pollu-tion Prevention

• Updated the EPA Construction General Permit version (from 2003 to 2010)

Prerequisite Environmental Site As-sessment • Guidance for projects outside the U.S.

Credit Site Assessment • New credit. • Encourages early analysis of site to inform design.

Prerequisite – Integrative Project Planning and Design (Healthcare Only)

• Minor changes from LEED 2009 for Healthcare

Credit – Integrative Process • New credit. Emphasizes design synergies between energy and water systems.

LOCATION AND TRANSPORTATION

Credit LEED for Neighborhood Development Location

• New credit – streamlined documentation path for LT • Alternative path to the location and transportation credits. Pro-

jects earning this credit need not comply with other LT credits.

Credit Sensitive Land Protection • Renamed from “Site Selection” • Avoidance of sensitive land including habitat, wetlands, farmland.

Credit High Priority Site • New credit • Reward for locating on sites that have development constraints

or require more resources to develop, including brownfields

Credit Surrounding Density and Diverse Uses

• The former “Development Density and Community Connectivity” • Multiple thresholds to reward different density levels and

amounts of diverse uses • Projects earn points in the density and the diverse uses options

Credit Quality Transit

• The former “Alternative Transportation-Public Transportation Access”

• Multiple thresholds to reward varying transit service levels • Guidance on how to count transit trips

Credit Bicycle Facilities

• The former “Alternative Transportation-Bicycle Storage, and Changing Rooms”

• Requirements for proximity to a bicycle network that connects to various amenities

• Greater specificity for bicycle storage requirements

Credit Reduced Parking Footprint • The former “Alternative Transportation-Parking Capacity” • Reference to the ITE Transportation Planning Handbook

Credit Low-Emitting and Fuel-Efficient Vehicles

• The former “Alternative Transportation – Low-Emitting and Fuel-Efficient Vehicles”

• Preferred parking for low-emitting and fuel-efficient vehicles and the provision of alternative-fuel refueling stations

• Requirements for buses and on-site vehicles (Schools) • Warehouse and Distribution Centers requirement added for on-

site vehicles and anti-idling measures

Credit Alternative Transportation • Removed this previously Retail-specific credit and distributed its former options among the analogous D&C rating systems

Credit Brownfield Remediation • Moved requirements to Location and Transportation Credit: High

Priority Site • Combined options in LEED 2009.

Credit Site Development - Protect or Restore Habitat

• Replaced setback requirements with preservation standards • Soil requirements include disturbed/compacted soils • Option for financial support

Credit Site Development - Open Space

• Credit renamed from “Site Development – Maximize Open Space” • Provides opportunities for social interaction, passive recreation

and physical activities • Vegetated roofs must be physically accessible • Clarified turf grass requirements.

Credit Rainwater Management

• Combined Stormwater Design- Quality Control and Stormwater Design- Quantity Control

• Site-specific criteria for more frequent, low-intensity events • Option for zero lot line, urban projects

Credit Heat Island Reduction

• Combined Heat Island Effect- Nonroof and Roof • Updated the roof SRI requirements • Changed paving materials metric to Solar Reflectance (SR) • Included 3-year aged SRI and SR values • Weighted SRI average calculation methodology • Updated threshold for Parking Under Cover

Credit Light Pollution Reduction

• Removed the interior requirements (covered in EA prerequisite) • Included the BUG rating methodology (a simpler methodology to

meet the exterior requirements) • Added Lighting Zone 0 • Incorporated MLO definitions • Included exterior signage requirements • Exemption for national flag lighting

Credit Site Master Plan • Clarified requirements for projects with no future planned devel-opment

Credit Tenant Design and Con-struction Guidelines

• Added “Storage and collection of recyclables” to the list of credits/ prerequisites

Credit Connection to the Natural World- Places of Respite • No substantive technical changes.

Credit Connection to the Natural World- Direct Exterior Ac-cess for Patients

• No substantive technical changes.

Credit Joint Use of Facilities • Removed the requirements for separate entries

WATER EFFICIENCY

Prerequisite Indoor Water Use Reduc-tion

• Changed title from Water Use Reduction • WaterSense label required for certain fixtures and fittings • Appliance and process water addressed • Basic cooling tower requirement from ASHRAE 189 • Additional appliance and process water requirements for Retail,

Schools, Healthcare and Hospitality only.

Prerequisite Minimum Potable Water Use for Medical Equip-ment Cooling (Healthcare)

• Prerequisite deleted.

Prerequisite Building-Level Water Me-tering

• New prerequisite. • Includes an agreement for sharing data with USGBC

Credit Outdoor Water Use Re-duction

• Changed Title from Water Efficient Landscaping • Changed reference tool to EPA WaterSense Water Budget Tool

Credit Indoor Water Use Reduc-tion

• Changed title • WaterSense label required for certain fixtures and fittings • Added Appliance and Process Water requirements.

Credit Sustainable Wastewater Management (Innovative Wastewater Technologies)

• Deleted from rating system. Will be tested in Pilot Credit Library with new nutrient recovery option.

Credit Cooling Tower Water Use • New credit. • Addresses cooling tower water efficiency.

Credit Water Metering • New credit. • Reward for submetering of water systems.

ENERGY AND ATMOSPHERE

Prerequisite Fundamental Commission-ing and Verification

• Previously titled “Fundamental Commissioning of Building Energy Systems”

• Modified intent to ensure project meets the owner’s projects re-quirements that relate to energy, water, indoor environmental qual-ity and durability

• Added requirement for preparing an Operations and Maintenance Plan

• Must engage a Commissioning Authority by the end of the design development phase

Prerequisite Minimum Energy Perfor-mance

• Updated reference to ASHRAE 90.1-2010 • Added requirements for data center modeling and that a minimum

30% energy savings must come from building power and cooling • Added retail-specific process load requirements • Updated AEDGs to 50% versions for Office, Retail, Schools, and

Healthcare • Projects must meet six additional strategies in addition to core re-

quirements when using the Core Performance Guide • Added metric conversions

• Added guidance for projects outside US

Prerequisite Building-Level Energy Me-tering

• New prerequisite for 2012 • Includes an agreement for sharing data with USGBC

Prerequisite Fundamental Refrigerant Management

• Clarified language • Added metric conversions

Credit Enhanced Commissioning

• Two new options for exterior enclosure commissioning and moni-toring based commissioning

• Added requirements to prepare the building operators for the in-tended operation of building systems

Credit Optimize Energy Perfor-mance

• Updated reference to ASHRAE 90.1-2010 • Added requirements for data center modeling and that a minimum

30% energy savings must come from building power and cooling • Added retail-specific process load requirements • Updated AEDGs to 50% versions for Office, Retail, Schools, and

Healthcare • Removed Core Performance Guide • Added metric conversions • Added guidance for projects outside US

Credit Advanced Energy Meter-ing

• New credit for 2012 • Offers design and construction projects a prescriptive approach to

track building-level and system-level energy use • Advanced meters for all whole-building energy sources consumed

by the building and any individual energy end-uses that represent 10% or more of the total annual consumption of the building

Credit Demand Response

• New credit for 2012 • Optimize electricity generation and reduce carbon emissions • Established minimum participation requirements. • Included requirements for commissioning DR processes

Credit Renewable Energy Pro-duction

• Renamed from “On-Site Renewable Energy” • Added provision for community renewable energy systems

Credit Enhanced Refrigerant Management

• Clarified language • Added metric conversions • Added retail-specific requirements

Credit Green Power and Carbon Offsets

• Renamed from “Green Power” • Reward for carbon offsets for scope 1 or 2 emissions • Added requirement for a 5-year contract for eligible resources that

came online after January 1, 2005 MATERIALS AND RESOURCES

Prerequisite Storage and Collection of Recyclables

• Added batteries, mercury containing lamps, and electronic waste to storage locations (choose 2 of 3).

• For Retail, changed identify top 4 waste streams to provide col-lection and storage space.

Prerequisite Construction and Demoli-tion Waste Management

• New prerequisite. • Outlines requirements for waste management policy and report-

ing waste to USGBC.

Credit Building Reuse – Maintain Existing Walls, Floors, and Roof

• Credit deleted and moved to Building Life Cycle Impact Reduc-tion.

Credit Building Reuse – Maintain Interior Nonstructural Ele-

• Credit deleted and moved to Building Life Cycle Impact Reduc-tion credit and Material Disclosure and Optimization.

ments

Credit Building Life Cycle Impact Reduction

• Combination of “Building Reuse – Maintain Existing Walls, Floor and Roof” and “Building Reuse- Maintain Interior Nonstructural Elements”.

• Options for historic and blighted buildings and whole building lifecycle assessment.

Credit Material Disclosure and Optimization

• New credit. • Requires Environmental Product Declarations. • Focus on transparency. • Reward for Local Sourcing (100 miles), Recycled Content, Ex-

tended Producer Responsibility, and Salvage materials.

Credit Materials Reuse • Credit deleted and moved into Building Life Cycle Impact As-

sessment or Material Disclosure and Optimization- Multi-Attribute Assessment for Nonstructural Products.

Credit Recycled Content • Credit deleted and moved into Material Disclosure and Optimiza-tion.

Credit Regional Materials • Credit deleted and moved into Material Disclosure and Optimiza-tion.

Credit Rapidly Renewable Mate-rials • Credit deleted.

Credit Certified Wood • Credit deleted and moved to Responsible Extraction of Raw Ma-terials.

Credit Material Ingredient Report-ing

• New credit. • Focus on transparency. • Options for manufacturer and 3rd party verified disclosure

Credit Avoidance of Chemicals of Concern

• New credit. • Reduce the presence of potentially hazardous substances from

the material supply chain. • Reference to REACH or third-party verified equivalent.

Credit Responsible Extraction of Raw Materials

• New credit for 2012. • Emphasizes transparency of extraction practices through third-

party reporting for biobased, mined, quarried, and other extracted material.

• Incentive for purchase of domestic and local materials.

Credit PBT Source Reduction- Mercury in Lamps (Healthcare)

• No substantive technical change.

Credit PBT Source Reduction- Lead, Cadmium, Copper (Healthcare)

• No substantive technical change.

Credit Furniture and Medical Furnishings (Healthcare) • No substantive technical change.

Credit Resource Use-Design for Flexibility (Healthcare) • No substantive technical change.

Credit Construction and Demoli-tion Waste Management

• Alternative Daily Cover is no longer counted as diverted waste. • Total waste diversion from multiple material types. • Option for waste reduction strategy

INDOOR ENVIRONMENTAL QUALITY

Prerequisite Minimum Indoor Air Quali-ty Performance

• Requirements for outside air delivery monitoring • Removed the additional requirement for residential projects to

meet ASHRAE 62.2 • Requirements for radon-resistant residential construction

• Guidance for projects outside the U.S.

Prerequisite Environmental Tobacco Smoke Control

• Reduced the maximum allowable leakage rate for compartmental-ized residential units

• Smoking is prohibited on the entire site for Schools projects

Prerequisite Minimum Acoustic Perfor-mance (Schools only)

• Harmonized ANSI & ASHARE standards • Exterior noise control exceptions for projects located on quiet sites • Exceptions for projects with limited renovation scopes or strict his-

toric preservation requirements

Credit Outdoor Air Delivery Moni-toring

• Removed credit. Requirements are now split between the Mini-mum Indoor Air Quality Performance Prerequisite and the En-hanced Indoor Air Quality Strategies credit.

Credit Increased Ventilation • Removed credit. Requirements are in the Enhanced Indoor Air Quality Strategies credit.

Credit Enhanced Indoor Air Qual-ity Strategies

• New credit comprised of the former Outdoor Air Delivery Monitor-ing, Increased Ventilation, Indoor Chemical and Pollutant Source Control credits.

• Options for mathematical modeling and additional sensors, mixed mode systems and equivalent filtration requirement for projects outside the U.S.

Credit Low-Emitting Interiors

• Based on VOC emissions rather than VOC content • Added requirement for TVOC disclosure • Harmonized AgBB • Modified requirements for formaldehyde • Harmonized ANSI/BIFMA • Exterior Applied Products (Schools)

Credit Construction Indoor Air Quality Management Plan • Equivalent filtration requirement for projects outside the U.S.

Credit Indoor Air Quality As-sessment

• Renamed the former Construction Indoor Air Quality Management Plan—Before Occupancy credit

• Upper cap to temperature for flush outs • Expanded the list of contaminants tested for under Option 2 • Furniture must be installed

Credit Indoor Chemical and Pol-lutant Source Control

• Removed credit. Requirements are in the Enhanced Indoor Air Quality Strategies credit.

Credit Controllability of Sys-tems—Lighting • Removed credit. Requirements are in the Interior Lighting credit.

Credit Thermal Comfort • Harmonized ASHRAE standards • Additional option to use ISO and CEN standards • Removed credit from CS rating system

Credit Interior Lighting • Clarified switching requirements and definitions of mid-level • Lighting Quality requirements

Credit Daylight

• Option for spatial daylight autonomy • Changed units from footcandles to lux • Reduced the number of calculations needed under Option 2 • Timing requirements for Option 3

Credit Quality Views • LEED 2009 exemplary performance criteria • Provisions for interior atria and clear glazing requirement

Credit Acoustic Performance

• New credit for all rating systems (except Schools and Healthcare) • Requirements for room noise levels, speech privacy and sound

isolation, reverberation time, and paging, masking, and sound rein-forcement systems.

• Harmonized ANSI and ASHRAE standards